/*
breathing_sign-engraver.cc -- implement Breathing_sign_engraver
- Copyright (C) 1999 Michael Krause
+ (c) 1999--2009 Michael Krause
written for the GNU LilyPond music typesetter
-TODO:
+ TODO:
. Cancel any beams running through the breathing sign
- ([e8 \breathe f e f] should become [e8] \breathe [f e f])
+ ([e8 \breathe f e f] should become [e8] \breathe [f e f])
. Spacing is not yet completely pretty
-
*/
-#include "staff-symbol-referencer.hh"
#include "breathing-sign.hh"
-#include "musical-request.hh"
-#include "command-request.hh"
-#include "engraver-group-engraver.hh"
-#include "item.hh"
#include "engraver.hh"
-#include "command-request.hh"
+#include "item.hh"
+#include "stream-event.hh"
-class Breathing_sign_engraver : public Engraver {
+#include "translator.icc"
+
+class Breathing_sign_engraver : public Engraver
+{
public:
- TRANSLATOR_DECLARATIONS(Breathing_sign_engraver);
-
+ TRANSLATOR_DECLARATIONS (Breathing_sign_engraver);
+
protected:
- virtual bool try_music (Music *req);
- virtual void process_acknowledged_grobs ();
- virtual void stop_translation_timestep ();
- virtual void start_translation_timestep ();
+ void process_music ();
+ void stop_translation_timestep ();
+ DECLARE_TRANSLATOR_LISTENER (breathing);
private:
- Breathing_sign_req * breathing_sign_req_;
- Grob * breathing_sign_;
+ Stream_event *breathing_sign_event_;
+ Grob *breathing_sign_;
};
Breathing_sign_engraver::Breathing_sign_engraver ()
{
breathing_sign_ = 0;
- breathing_sign_req_ = 0;
+ breathing_sign_event_ = 0;
}
-bool
-Breathing_sign_engraver::try_music (Music*r)
+IMPLEMENT_TRANSLATOR_LISTENER (Breathing_sign_engraver, breathing);
+void
+Breathing_sign_engraver::listen_breathing (Stream_event *ev)
{
- if (Breathing_sign_req * b= dynamic_cast <Breathing_sign_req *> (r))
- {
- breathing_sign_req_ = b;
- return true;
- }
-
- return false;
+ ASSIGN_EVENT_ONCE (breathing_sign_event_, ev);
}
void
-Breathing_sign_engraver::process_acknowledged_grobs ()
+Breathing_sign_engraver::process_music ()
{
- if (breathing_sign_req_ && ! breathing_sign_)
+ if (breathing_sign_event_)
{
- SCM b = get_property ("BreathingSign");
- breathing_sign_ = new Item (b);
-
- announce_grob(breathing_sign_, breathing_sign_req_->self_scm());
- breathing_sign_req_ = 0;
+ breathing_sign_ = make_item ("BreathingSign", breathing_sign_event_->self_scm ());
}
}
-void
+void
Breathing_sign_engraver::stop_translation_timestep ()
{
- if (breathing_sign_)
- {
- typeset_grob (breathing_sign_);
- breathing_sign_ = 0;
- }
+ breathing_sign_ = 0;
+ breathing_sign_event_ = 0;
}
-void
-Breathing_sign_engraver::start_translation_timestep ()
-{
- breathing_sign_req_ = 0;
-}
+ADD_TRANSLATOR (Breathing_sign_engraver,
+ /* doc */
+ "Create a breathing sign.",
+
+ /* create */
+ "BreathingSign ",
+ /* read */
+ "",
-ENTER_DESCRIPTION(Breathing_sign_engraver,
-/* descr */ "",
-/* creats*/ "BreathingSign",
-/* accepts */ "general-music",
-/* acks */ "",
-/* reads */ "",
-/* write */ "");
+ /* write */
+ ""
+ );